public async Task <IActionResult> Edit_info(GroupDescription model) { bool isGroupEdited = _groupLogic.EditGroupInfo(model); if (isGroupEdited) { GroupModel group = _groupLogic.FormGroupModel(model.Id, User.Identity.Name); return(View("~/Views/Group/GroupDetails.cshtml", group)); } else { GroupModel group = _groupLogic.FormGroupModel(model.Id, User.Identity.Name); ModelState.AddModelError("error_message", "Имя занято"); return(View("~/Views/Group/GroupDetails.cshtml", group)); } }